And there have been several Dune entries on TV that ran on the Sci-Fi network some years ago.
"With the advances in TV over the last few years, I think it's time for a new adaptation of The Hitchhiker's Guide To The Galaxy. The movie was disappointing and the original series is looking very dated, but the material is still hilarious." ethantbale
"[Dune is] Game of Thrones in space with complicated and interesting characters. Even the first book could be two or three seasons and there are loads of books. There's a huge universe of world building, great plot, loads of ideas about ecology, religion, fate, myth, and even sword fights." Lucy G O'malley-Local, Facebook
"I know it's already been a movie and a mini-series, but I feel like the only way to really do it justice would be to give it the full HBO treatment in an ongoing series." Brendan Anthony, Facebook